NOTE: The status-bar for the iterative procedure shows the average difference between the
allocated area of the different land use types and the required allocation of the different land use
types. The simulation of one year is finished if the allocated area deviates less than the specified
maximum allowed deviation. Only when one of the land use types exceeds the specified
maximum deviation between allocation and requirements for one of the land use types the
iterations will continue and a special indicator will appear on the screen.